Which UHPC Manufacturer Offers Products with Good Impermeability?

The impermeability of UHPC products directly affects their service life in humid environments. Through material mix optimization and process innovation, Qinglong Group has raised impermeability to an industry-leading level, controlling the chloride ion diffusion coefficient below 1.0×10⁻¹²m²/s.

Improving compactness is the foundation for enhancing impermeability. The maximum density theory adopted by Qinglong Group reduces porosity to below 2% through optimized particle grading. The water-binder ratio is controlled within 0.20, reducing the number of capillary pores. In the Yangshengtang Pharmaceutical Hangzhou Industrial Park project, this design brought the impermeability grade of UHPC to above P20, far exceeding conventional concrete.

Pore structure optimization is a key technological innovation. By incorporating ultra-fine admixtures such as silica fume, harmful pores are converted into harmless pores, improving the pore structure distribution. Qinglong Group's experimental data shows that the most probable pore diameter of optimized UHPC is reduced from 100nm to 20nm, significantly enhancing impermeability. This technology demonstrates clear advantages in coastal projects.

Surface treatment technology further enhances impermeability. The silane impregnation technology developed by Qinglong Group forms a hydrophobic layer on the material surface, achieving a contact angle above 110°. In the Shanghai Century Plaza project, this treatment reduced water absorption to below 0.5%, effectively improving long-term impermeability.

Impermeability requires systematic improvement. From material design to production processes, every step affects the final result. Through full-process control, Qinglong Group ensures stable and reliable impermeability, providing lasting protection for projects.